10.6

Table Of Contents
393Logic Pro Instruments
Sampler modulation via sources
The table outlines sources you can choose in the Via pop-up menus of the Mod Matrix
pane that can be used to control the modulation intensity. Also see Sampler modulation
sources and Sampler modulation targets.
Via Source Comments
--- or None Disables the via source.
Side Chain Uses the side-chain signal as a modulation signal. Choose the side-chain
source from the Side Chain pop-up menu in the plug-in window header. It
is fed to the internal envelope follower, which creates a modulation value
based on the current side-chain input signal level.
Maximum Sets the value of this via source to +1 (an internal value that indicates the
maximum possible amount for this source). This offers interesting options
for controlling the modulation intensity with all possible via values.
Random A random value is used as a via source.
LFO 1 - 4 Choose the LFO you want to use as a via source.
Envelope 1 - 5 Choose the Envelope Generator you want to use as a via source.
Key Outputs the keyboard position (the MIDI note number). The default center
point is C3. A value of -100 indicates five octaves below C3. A value of
+100 indicates five octaves above. Modulate the Cutoff target with the
Key source to control the cutoff frequencies of the filter with the keyboard
position—as you play up and down the keyboard, the cutoff frequencies
change. A modulation Amount value of 50 proportionately scales cutoff
frequencies (by half) with keyboard note pitches.
Velocity Velocity serves as a via modulation source.
Release Velocity The via modulation occurs when you release a key (this requires a
keyboard that sends release velocity information).
Pitch Bend The pitch bend wheel is used as a via modulation source.
Aftertouch Aftertouch (also known as keyboard pressure) serves as a via modulation
source. Sampler reacts to mono and poly aftertouch.
Note: If you set the target to Cutoff, the cutoff frequencies rise and fall,
depending on how firmly you press a key on your touch-sensitive MIDI
keyboard—after the initial keystrike.
Mod Wheel Your keyboard Modulation Wheel controller is used as a via modulation
source.
MIDI Controllers 2–119 The MIDI controller you choose serves as a via modulation source.
Controllers 7 and 10 are used for volume and pan control of channel
strips. Controller 11 is marked Expression. It has a fixed connection to this
function, but it can also be used to control other modulation sources.